<template>

  <div class="login-wrapper">
    <div class="login-container">
      <div class="form-header">
        <h2>用户登录</h2>
        <p>欢迎回来，请登录您的账号</p>
      </div>
      <form @submit.prevent="handleLogin" class="floating-form">
        <div class="input-group">
          <input id="username" v-model.trim="loginForm.username" type="text" autocomplete="off" @input="validateInput" required />
          <label for="username">用户名</label>
          <span class="highlight"></span>
        </div>
        <div class="input-group">
          <input id="password" v-model.trim="loginForm.password" type="password" autocomplete="off" @input="validateInput" required />
          <label for="password">密码</label>
          <span class="highlight"></span>
        </div>
        <div class="error-message" v-if="errorMsg">{{ errorMsg }}</div>
        <button type="submit" class="submit-btn" :disabled="!isFormValid">
          <span>登录</span>
          <i class="arrow-icon"></i>
        </button>
        <div class="form-footer">
          <span>还没有账号？</span>
          <a href="/register">立即注册</a>
        </div>
      </form>
      <a href="/student" class="student-link">
        <el-icon><folder /></el-icon>
        <span>学生中心</span>
      </a>
      <div>

      </div>
      <a href="/tea" class="teacher-link">
        <el-icon><folder /></el-icon>
        <span>教师登录</span>
      </a>
    </div>
  </div>
</template>

<script setup>
import { ref, reactive, onMounted } from 'vue'
import { useRouter } from 'vue-router'
import request from "@/utils/request.js"
import {Folder} from "@element-plus/icons-vue";

const router = useRouter()

//表单数据
const loginForm = reactive({
  username: '',
  password: ''
})

const errorMsg = ref('')
const isFormValid = ref(false)

// 输入验证
const validateInput = () => {
  // 基本验证
  if (loginForm.username && loginForm.password) {
    isFormValid.value = true
    errorMsg.value = ''
  } else {
    isFormValid.value = false
  }
}

// 登录处理
// const handleLogin = async () => {

  // 防止XSS攻击
  // const xssPattern = /(~|\{|\}|"|'|<|>|\?)/g
  // if (xssPattern.test(loginForm.username) || xssPattern.test(loginForm.password)) {
  //   errorMessage('警告:输入内容包含非法字符');
  //   return
  // }
  //
  // try {
  //   // 对输入进行转义处理
  //   const safeUsername = encodeURIComponent(loginForm.username)
  //   const safePassword = encodeURIComponent(loginForm.password)
  //
  //   // 实际的登录API调用
  //   console.log('登录请求:', { username: safeUsername, password: safePassword })
  //
  //   // 模拟登录成功并设置cookie，设置过期时间为1小时
  //   const expires = new Date(Date.now() + 3600 * 1000).toUTCString()
  //   document.cookie = `authToken=yourAuthToken; path=/; expires=${expires}`
  //
  //   // 跳转到主页
  //   router.push('/home')
  // } catch (error) {
  //   errorMessage('登录失败，请稍后重试');
  // }
// }

// login.vue
async function handleLogin() {
  validateInput()
  if (!isFormValid.value) return

  console.log('发送给后端的登录数据:', loginForm) // 打印数据进行检查

  try {
    const response = await request.post('/api/login', loginForm)

    if (response.data != null) {
      localStorage.setItem("id",response.data.id);
      router.push('/home')
    } else {
      errorMessage('用户名或密码错误')
    }
  } catch (error) {
    console.error('登录失败:', error)
    errorMessage('登录失败，请重试')

}




}


// 错误提示
const errorMessage = (text) => {
  errorMsg.value = text
  setTimeout(() => {
    errorMsg.value = ''
  }, 3000)
}

// onMounted(() => {
//   // validateInput()
// })

</script>

<style scoped>
.login-wrapper {
  min-height: 93.5vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 480px;
  background: white;
  border-radius: 20px;
  padding: 40px;
  padding-right: 80px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.form-header {
  text-align: center;
  margin-bottom: 40px;
}

.form-header h2 {
  color: #2c3e50;
  font-size: 32px;
  margin-bottom: 10px;
  font-weight: 700;
}

.form-header p {
  color: #95a5a6;
  font-size: 16px;
}

.floating-form .input-group {
  position: relative;
  margin-bottom: 30px;
}

.input-group input {
  width: 100%;
  padding: 15px;
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  font-size: 16px;
  transition: all 0.3s ease;
  background: transparent;
}

.input-group label {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  background: white;
  padding: 0 5px;
  color: #95a5a6;
  font-size: 16px;
  transition: all 0.3s ease;
  pointer-events: none;
}

.input-group input:focus,
.input-group input:valid {
  border-color: #3498db;
}

.input-group input:focus + label,
.input-group input:valid + label {
  top: 0;
  font-size: 14px;
  color: #3498db;
}

.submit-btn {
  width: 100%;
  padding: 15px;
  margin-left: 15px;
  background: linear-gradient(to right, #3498db, #2980b9);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.arrow-icon {
  border: solid white;
  border-width: 0 2px 2px 0;
  display: inline-block;
  padding: 3px;
  transform: rotate(-45deg);
}

.form-footer {
  text-align: center;
  margin-top: 20px;
  color: #95a5a6;
}

.form-footer a {
  color: #3498db;
  text-decoration: none;
  margin-left: 5px;
  font-weight: 600;
}

.form-footer a:hover {
  text-decoration: underline;
}

.error-message {
  color: #f56c6c;
  font-size: 14px;
  text-align: center;
  margin-bottom: 20px;
}

@media (max-width: 480px) {
  .login-container {
    padding: 20px;
  }

  .form-header h2 {
    font-size: 24px;
  }

  .input-group input {
    padding: 12px;
  }
}

@media (max-width: 768px) {
  .login-container {
    max-width: 400px;
    padding: 30px;
  }

  .form-header h2 {
    font-size: 28px;
  }

  .form-header p {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .login-container {
    padding: 20px;
    margin: 10px;
    max-width: 100%;
  }

  .form-header h2 {
    font-size: 24px;
  }

  .form-header p {
    font-size: 14px;
  }

  .input-group input {
    padding: 12px;
    font-size: 14px;
  }

  .input-group label {
    font-size: 14px;
  }

  .submit-btn {
    padding: 12px;
    font-size: 16px;
  }
}

@media (max-width: 320px) {
  .login-container {
    padding: 15px;
  }

  .form-header h2 {
    font-size: 20px;
  }

  .input-group {
    margin-bottom: 20px;
  }
}
.student-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.student-link .el-icon {
  margin-right: 8px;
}
.teacher-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.teacher-link .el-icon {
  margin-right: 8px;
}
</style>
